Rubber vulcanization and product thereof



.Patented Nov. 7, 1922.

UNITED STATES PATENT OFFICE.

HAROLD A. MORTON, OF AKRON, OHIO.

RUBBER VULCANIZATION AND PRODUCT THEREOF.

No-D r awing.

To all 101mm if may concern:

Be it known that I. HAROLD A; Moimix. a citizen of the United States.and a resident of Akron. in the county of Summit and State of()hio,'have invented certain new and useful Improvements in Rubber Vul-By the addition of this substance or any of its derivatives to a rubbermixture in an appropriate quantity, and then elevating the temperature.as is practised in the art. a well vulcanized product is obtained in avery short time. Moreover there are additional advantages, namely. thatthe .lesllltlng riibber compound possesses high tensile strength andremarkable durability.

Some of tllQllQllVtltlYtS of tertiary amyl amine that 'may be used are:tertiary amyl amine borate. tertiary amyl amine carbonate, tertiaryamyl amine stearate. the condensation product of tertiary amyl aminewith benzaldeliyde. etc.

It is understood that I regard myself as in no way limited by theseexamples amt can use any other derivi'itive'ot' tertiary amyl amine thatI choose.

The following examples are given 1212117221219 1. 90 parts smoked rubbersheets. 4 parts sulphur.

Application tiled May 5.1921. Serial No. 467,000.

5 parts zinc oxide. ,1 part tertiary amyl amine.

The temperature of the llllxlllfl is then l'tllSQtl t-o 1-10-1-t5 t. andvulcanization is complete in eight n'iinutes;

100 parts smoked sheets.

87 parts zinc oxide.

4 parts magnesium oxide.

8 parts sulphur.

1 part benzylidene tertiary amyl amine.

At a temperature of LEW-145 'C. vulcanization is complete at. the end often minutes.

The foregoing examples show how the accelerators may be used but I donot limit myself in any way to those examples.

; What I claim is:

1. The herein described method of acceleratin; the vulcanization ofrubber which consists in mixing with the rubber compound tertiary amylamine.

:2. The herein describedmethod which consists in mixing with'a rubbercompound a. small percentage of tertiary amyl amine,

and thereafter raising; the temperature of the compound.

3. The herein described method: of acceleratiii; the vulcanization ofrubber which consists in mixiii,g with the rubber compound a basicderivative of tertiary amylamine. I

4. The herein described niethodof acceleratina the vulcanization ofrubber which consists in iiiixin; with the rubber com v pound aderivative of tertiary amylamine.

5. As an article of manufacture a rubber compound containinp tertiaryamyl amine before vulcanization.

In testimony whereof, I atfix my signature.

HAROLD A. MORTON.

